<?php
/**
 * Smarty Internal Plugin Compile Break
 *
 * Compiles the {break} tag
 *
 * @package Smarty
 * @subpackage Compiler
 * @author Uwe Tews
 */
/**
 * Smarty Internal Plugin Compile Break Class
 *
 * @package Smarty
 * @subpackage Compiler
 */
class Smarty_Internal_Compile_Break extends Smarty_Internal_CompileBase {

	/**
	 * Attribute definition: Overwrites base class.
	 *
	 * @var array
	 * @see Smarty_Internal_CompileBase
	 */
	public $optional_attributes = array('levels');
	/**
	 * Attribute definition: Overwrites base class.
	 *
	 * @var array
	 * @see Smarty_Internal_CompileBase
	 */
	public $shorttag_order = array('levels');

	/**
	 * Compiles code for the {break} tag
	 *
	 * @param array  $args array with attributes from parser
	 * @param object $compiler   compiler object
	 * @param array  $parameter  array with compilation parameter
	 * @return string compiled code
	 */
	public function compile($args, $compiler, $parameter)
	{
		static $_is_loopy = array('for' => true, 'foreach' => true, 'while' => true, 'section' => true);
		// check and get attributes
		$_attr = $this->getAttributes($compiler, $args);

		if ($_attr['nocache'] === true) {
			$compiler->trigger_template_error('nocache option not allowed', $compiler->lex->taglineno);
		}

		if (isset($_attr['levels'])) {
			if (!is_numeric($_attr['levels'])) {
				$compiler->trigger_template_error('level attribute must be a numeric constant', $compiler->lex->taglineno);
			}
			$_levels = $_attr['levels'];
		} else {
			$_levels = 1;
		}
		$level_count = $_levels;
		$stack_count = count($compiler->_tag_stack) - 1;
		while ($level_count > 0 && $stack_count >= 0) {
			if (isset($_is_loopy[$compiler->_tag_stack[$stack_count][0]])) {
				$level_count--;
			}
			$stack_count--;
		}
		if ($level_count != 0) {
			$compiler->trigger_template_error("cannot break {$_levels} level(s)", $compiler->lex->taglineno);
		}
		$compiler->has_code = true;
		return "<?php break {$_levels}?>";
	}

}

?>